Tr 36×12(6)表示公称直径为ф36的梯形双头螺纹,螺距为6 mm。

题型:判断题

问题:

Tr 36×12(6)表示公称直径为ф36的梯形双头螺纹,螺距为6 mm。

考点:车工职业技能鉴定国家题库车工理论知识试卷
题型:判断题

某生物学兴趣小组开展“不同浓度香烟浸出液对水蚤的影响”的课题研究.他们已将香烟和蒸馏水按照一定的重量比浸泡24h,过滤后的液体作为原液.如果你是其中一员,请回答:

(1)采用何种指标来确定香烟浸出液对水蚤有无影响?(只要一种指标)

(2)指出做该实验时必备的实验器材.

(3)写出实验的主要操作步骤.

(4)设计一张表格用于实验时记录数据.

题型:判断题

从两张50元,三张20元,五张10元共十张钞票中任取五张票面的总值小于n元的可能取法有种。()

(1)n=100 (2)n=110

A.条件(1)充分,但条件(2)不充分。

B.条件(2)充分,但条件(1)不充分。

C.条件(1)和(2)单独都不充分,但条件(1)和条件(2)联合起来充分。

D.条件(1)充分,条件(2)也充分。

E.条件(1)和(2)单独都不充分,条件(1)和条件(2)联合起来也不充分。

题型:判断题
完形填空  (共15小题;每小题2分.满分30分)
阅读下面短文,掌握其大意.然后从1—15各题所给的A、B、C和D项中,选出最佳选项,并在答题卡上将该项涂黑。
Internet users will have to register using their real names before indulging in online games starting Sunday as part of a nationwide campaign to protect minors and improve management of the virtual gaming industry, authorities said.
The Ministry of Culture had ___1____ the regulation in late June. #资#源#网
The regulation, which will take effect on Aug 1, applies ___2____ all multiplayer role-playing and social networking games.
But both ardent game players and experts believe the policy will have___3____ impact on the industry.
Major online game operators in China, including Shanda and Tencent Games, said they had already implemented the real name registration policy some months ago and the move has not had an effect on their____4___.
Many also question the effectiveness of the policy, as it will fail to protect minors in the absence of a credible identity recognition system.
"Minors might as well borrow or even buy ID cards online if they really want to play games. So the new rule cannot really keep them ____5___," said Hu Dong, an avid gamer from Shanghai.
Li Li, deputy director of the Shanghai Information Law Association, ___6____. He said it was meaningless to promote real name registration____7___  an effective national identification system, ___8____  should ideally include other credible information of the players, such as their bank accounts, in order to be really effective.
"Without such a___9____, the move will only increase costs for the operators and bring them greater risks," said Li.
The Shanghai version of the regulation has made more detailed rules in a bid to protect ___10____  from virtual warfare.考#资#源#网
Online game vendors, for instance, are required to indicate at prominent positions of their websites whether or not the games are suitable for minors, who are ___11___ 18 years old
If unsuitable for minors, game operators should install a technical system prohibiting them ___12____  starting the games.
For those games rendered appropriate for minors, there should be no misleading information___13____ and a time limit should be in place to prevent kids from getting addicted to the games, according to the regulation.
"If everyone can use their real ID cards to register, then the policy would be good for both minors and adults," said Wu Hao, 22, a Shanghai resident who has been playing online games for more than a decade.
"Now many online games that contain violence have been modified to appear less __14__  to minors, but we as adults don't like that a screening system is necessary ___15____ we all can enjoy the games," he said.
小题1:
A.issuedB.deliveredC.announcedD.decided
小题2:
A.inB.toC.atD.on
小题3:
A.greatB.muchC.littleD.a lot of#考#资#源#网
小题4:
A.gamesB.customersC.operationD.business
小题5:
A.awayB.asideC.downD.off
小题6:
A.disagreedB.agreedC.refusedD.reputed
小题7:
A.withB.inC.withinD.without
小题8:
A.whichB.thatC.whatD.who
小题9:
A.baseB.basisC.basementD.based
小题10:
A.peopleB.adultsC.girlsD.minors
小题11:
A.overB.aboutC.underD.at
小题12:
A.fromB.awayC.withD.in
小题13:
A.involvingB.involvedC.to involveD.being involved
小题14:
A.interesting B.amazingC.frighteningD.exciting
小题15:
A.so thatB.andC.becauseD.that
题型:判断题

中国现代快递服务业的成长阶段是()。

A、19世纪90年代初至20世纪初

B、19世纪70年代末至20世纪初

C、20世纪80年代初至20世纪末

D、20世纪90年代初至21世纪初

题型:判断题

微波炉的高压变压器损坏,会引起()故障。

A.炉灯不亮,托盘不动,不加热

B.炉灯亮,托盘转动,不加热

C.屡烧保险管

D.不能烧烤

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